电讯技术2017，Vol.57Issue(5)：575-579,5.DOI:10.3969/j.issn.1001-893x.2017.05.014
用于非合作信号噪底估计的改进自回归算法
An Improved Recursive Algorithm for Noise Floor Estimationof Non-cooperative Received Signals
金鹏飞 1叶江峰 1胡茂海 1李兵 1邢政利1
作者信息
- 1. 中国工程物理研究院 电子工程研究所,四川 绵阳 621900
- 折叠
摘要
Abstract
Due to the impact of channel or receiver components,the noise floor of received signal spectrum could become uneven.In order to set signal detection threshold conveniently,it is required to estimate noise floor at first,and modify original spectrum afterwards.The classical nonlinear recursive smoothing filter algorithm sets the fixed threshold,so it is only useful for narrow band single signal.The improved algorithm in this paper adjusts the threshold dynamicly by adding adjustable coefficients,and calculates the initial threshold and adjustable coefficient according to original sampling data,which expands the operative range and practicality of the classical algorithm.Through a series of simulation experiments,it is demonstrated that the improved algorithm is useful for various signals.Especially,it is effective to wide band signals,which cannot be processed using the classical algorithm.关键词
非合作接收/信号检测/噪底估计/非线性自回归滑动滤波Key words
non-cooperative receiving/signal detection/noise floor estimation/nonlinear recursive smoothing filter分类
信息技术与安全科学引用本文复制引用
金鹏飞,叶江峰,胡茂海,李兵,邢政利..用于非合作信号噪底估计的改进自回归算法[J].电讯技术,2017,57(5):575-579,5.
